Explosive-engine.



A. L. COLMANT.

BXPLOSIVE ENGINE.

APPLIOATION FILED JAN. 2o, 191s.

Patented June 23, 1914,

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speei'ncaubn ot Letters munt. Animacion mea January to, 191e. serial mi. neem.

Patented J une 23, 1914.

louli whom'it my concern Be it known that I, AUBERT Louis Con- Manfr', a citizen of the French Republic, and resident of Chatenay, France, have invented certain new and useful Improvements Relating to Explosive-Engines, of whichV n the cylinder, and in the duct A. As soon'as the following is V'alspecification.

The piesent'i-nvention relates to an inte/rnel eomt'nistiony engine' off great simplicity.

and highellliciencyl. v

The invention also 'compiehends improvements iin 'the specific const/ructionand ar- Mngementof parts which will behereinafter ldescribed and particularly pointed out in the claims.

The accompanying drawing illustrates a vertical section of 'an-engine constructed in accordance with my invention.

'Dhe 'numeral 8 indicates 'a cylinder, in the top of which', 4at B, ya spark plug is mounted. The cylinder issupported on a plate 8, and to the under side of t'hisplate is attached a crank case 7.. Extending upwardly in the cylinder, and fomred integral with plate 8", is a smaller cylinder 6., spacedV from the inner Walls of cylinder 8, closed at its top, save for a small openinS", and open at the bottom. Operating in t e cyllnder 8, is a hollow piston, onl the top of which is a deflector 2, and depending centrally from the under side of the piston is a rod 9, pivotally connected at its lower end to a connecting rod 4, which in turn is connected to a crank shaft 5. The depending rod 9a passes through the opening v8", and near its lower end it is provided with a cross head 3, which operates in the cylinder 6.

The cylinder 8 is formedin one side with an inlet port A, and in the opposite wall with an exhaust port E, these two'ports being substantially in alinement. When the piston is in its lowermost position the ports A and E are open. The port A communicates, by means of a duct A', with a gas port 10, formed in .the lower end of cylinder 8, just over plate 8a.

A pipe 11 communicates with the cylinder 8 at 12, between ports A and 10. In this pipe is formed a chamber 11a, in which a ball valve 13 operates. A spring 18a acting on valve 13 serves to normally close the inlet to the chamber. Communicating with the top of the chamber 11, is a pipe 15,and

surrounding the latter is a screen 14.

Below ports A and E, and above the level of the pipe 11, are air inlet openings 0,

which are closed by the pieton, except when the latter is at the limit of its upward movement.

In oper-ation, (assume the piston is in the position shown in the drawing). when said piston rises, ita-creates a partial vacuum lin the open end 12 of pipe 11, is uncovered, .and a 4charge is-drawn into the cylinder, the partial vacuum-.unseats valve 13, allows the fuel .to pass, and at the same` time, a charge ofair from pipe 14 is drawn in. The mixture, when introduced in the cylinder, in an atomi-Zed condition, contacts with the hot walls of said cylinder and is immediately convent-ed intro gas. In the continued upward movement of the piston, the air -inlet ports are uncovered, and the partial vacuum is destroyed, hence the ball valve 13, immediately closes. Upon the descent of the piston the charge below same is slightly compressechand immediately port A is uncovered, the compressed charge is forced through ports 10 and A', and into the cylinder above thepiston. Now, uponv the next ascending stroke of the piston, the charge above the piston will be compressed and fired, as is usual in engines of this type;

What I. claim is 1. An explosive engine comprisinga cyl- `inder, the cylinder having an upper port and a lower port and an exhaust port adjacent said upper port, a lduct connecting the upper and lower ports, a fuel sup ly pipe communicating with the cylinder Ibetween the upper and lower ports, a check valve in the feed pipe which is normally closed, the fuel supply pipe having an opening for the admission of asupply of air to mix with the fuel passing through said pipe, said cylinder having an air inlet opening below the plane of the exhaust and upper ports, a hollow piston operating in the cylinder, a crank shaft, and connections between the crank shaft and piston, whereby when the piston is in its lowest position the upper port and the exhaust port are open and the fuel pipe and air inlet opening are closed and when said piston is raised said upper and exhaust ports will be closed and a Vacuum formed below the cylinder and a charge of fuel and air` introduced into the cylinder and an additional supply -of air will be subsequently admitted through the air inlet ports.

CaS-

2. An explosive engine comprising a ing, a cylinder mounted on .the casing, a smaller cylinder extending from the casing' into the first mentioned cylinder, a hollowa piston operating in the first mentioned cylinder, a rod extending from the piston and through` the smaller cylinder, a cross head on the rod, said cross head operating in the smaller cylinder, a crankshaft mounted in the casi-ng, a `connecting rod between the: crank shaft andvv the rod, communicating ports which form communication with the cylinder above and below the piston' when the latterfis in' 4its loweat position,1a fuel supply pipe communicating with the cylinder between 'the'ftwo aforesaid commun'i- .l

eating ports, acheck :valvel in `the pipe toVV normally close :the latter,- the said pipe-@having an air inlet opening'l between thefvalve and the cylinder, and the cylinder having an air inlet above the plane of vlthe 'fuelsupplyA pipe, whereby when V'the piston is elevated a. partial vacuum is formed Vand asu ply of fuel and ai-is'drawn 4into tlief'cyliner and subsequently VuponA the further upward movement of the piston, a `further supply of air is admitted and when said piston descends, the charge `is forced through the aforesaid two communicating the cylinder above the piston. Y

3. A itwo1 stroke explosive engine-cornprising a casing, -a lcylinderjmounted on ythe casing, the cy'llnder having vtw-o eommunieating ports,which-communicate I`YWith the' ports and into 1n-ninos,

,ports and the exhaust port being uneqgered by the piston when the latter is in its lower- ,most position, thev cylinder having a plurality of air Vinletl ports Which are uncovered when the piston 1s at its uppermost position,

va sparkingplug on top of said cylinder, a

pistonmoving to and fro within said cylinder,ra deflector on -top of said piston, a piston-rod, across head on said piston rod, afcrank shaftya connecting rod betweensaid crank shaft and said cross head, a, bottom `platev on said casing, a central cylinder mounted on said bott-om plate to form` a guide for the cross head, an oil' and air-inlet tube openinginto said cylinder at a level 'corresponding to the middle of the piston `when =t-1he latter is in its vlowermost position, a chamber provided in said tube, .aball in `said chamber for closing the oil inleta spring for lmaintaining said ball in closed position,

said chamber having an air inlet opening, a

wire -gauze'eovering said opening whereby oil 'will enter said tube when a vacuum is produced below the piston during its upward motion.

In testimony whereof I have hereunto set myhand in presence of two vwitnesses. ALBERT LOUIS COLMANT.

*1 '-Witnesses: A

- GASTON PETION,

LUCIENv Mmm-Linosa. 

